Fuel burner



Nov. 27 1923.

A. M. P. R. PIEDALLU FUEL BURNER Filed Feb. 2; 1922 flow of the fuel inPatented Nov. 27, 1923.

uNiTEof-sTATEsPATEN OFFI'EQ man iu A'iz'Ii: sisal; mania, or sevens,FRANCE.

Fun, BURNER.

a pease-a filed retina 12, 1522. Serial at. 533,696. I

To all wham'zt may concern:

e it known that I, Arman Mine PAso'A RENE PInnALLU, a citizen of theFrench Re; public, of 11 Rue des Gerideaux, Sevres, Seine-et Oise,France, have invented a Fuel Burner, ofwhich the following is a full,clear, and exact description. i

This invention has f r its object a burner utilizing as fuel ma zout,coal oil or other liquid or liquefiable fuel, this'burneribeing socombined as to do away with the use of In order tha't'the inventionmaybe clearly understood 'it will be 'describedhereafter with reference'to the accompanying drawing in which Fig.1 is a frontelevati o'n, I i IFig. 2 'is a longitudinal vertical'section made according to line 22ofFignl.

Fig. 3 is alplan view.

Fig. 4: 'isavertical cross' section made according to line 44 of Fig. 2.i Fig. 5 is a front view of a modlfication.

Fig. 6 is a longitudinal vertical section made according to line 6-6 ofFig. 5.

Fig. 7 is a plan view of the cup.

As illustrated in the drawing, the burner forming the subject-matter ofthis invention, is'composed of a cup 1 constituting the combustionchamber and between the edges of which is held a tube 2 adapted to pourin the cup 1 the fuel, mazout or the like, which is fed in the said tube2 by a funnel 3.

This tube 2, which is freely open to the atmosphere at its front end isprovided, at its opposite end, with a bottom 4: forming, with the tube2, an opening 5 permitting the the cup .1. This cu'p 1, which has theshape shown inthe drawing, is provided on its front face with a flaredopening constituting an atmospheric air intake, the conical wall 6 ofwhich is connected with those of the cup by providing, below the fuel/iduced cross section, having rie fb 'theaction'of the flames of the 111atube 2, an opening 7, vof re the shape of a putting in communication thein the cup 1 with the atmosphere and determining aniacceleration of thespeed 0f 'theiair drawn in the's aid cup at the time of crescent,

the'ignition and during the combustion of v the irlazout or'other fuelthrough'the tube 2. i I V Above [the tube 2 is arranged a second airpoured in the clip intake theconstruction of which is such as to bringabove the ignited fuel reheated atmospheric air,

This an mate is constituted by a kind of branch :8 extending on the,greatest part of thelength of the cup 1 which it covers'in" such'amanner that w e combustion is exposed to ignited fuel for 'thushighlyreheating the air circulating in thebranch 8; this branch is providedwith an inlet "opening of larger cross'section than the distributionopening 10, for the purpose of accelerating the circulation of the air.

At the rear part of the cup 1 is arranged chamber and that the said walli the lower wall of the, said branch forms the top of t anatmos'pheric'air intake 11 which, as the previous ones, is so arranged as to bringthe atmospheric air at an accelerated speed abovethe ignited fuel.

F nally, the improved burner may accessorilybefprovided with a U-shapedtube 12, r

as "illustrated in the drawing and the ends of which open in the'atmospherefthe said tube is provided ,with perforations 12 fordistributing also reheated air above the ignitedfuel. H v

The above described apparatus operates in the following manner; I

The fuel, mazout orthe like, "fed in the tube 2 flows in the cuplthrough the opening 5 provided atthe rear; of the said tube,

this fuel is then ignited in the thus constitutes the combustionchamber.

cup 1 which The airnecessary for the combustion is admitted from theexterior through the flared opening 6 the portion 7 of reduced crosssection of this opening 6 causing the acceleration of the speed of theair, a certain quantity of air entering also into the combustion chamberthrough the tube 2. During the combustion, the gases and flames whichlick the branch'8 heatlthe latter so that the atmospheric aircirculating in this branch is brought to a high temperature and i 1 ledat an accelerated speed above the ignited fuel through the distributionopening 11 of reduced cross section. v

Finally fresh additional air is admitted through the nozzle 11 anddistributed by the latter above the ignited fuelsoas to-complete V thecombustion.

In order to permit of facilitating the ignition and to convenientlyeffectthe cleaning of the burner, the cup carryingthe tube distributingthe'mazout can be mounted in such a manner that it can be movedlongitudinally by hand. i

This arrangement is illustrated in Figs. 4

"to 6, in which the said cup 1, provided as stated With the-tube 2, hason its sides lugs" 13 which are fitted in slidewavs l l integral Withthe fixed support provided with the nozzles 8 and 11, the nozzle 8dlstributlng hot air and the other fresh additional air above theignited fuel, as described With reference to Figs. 1 to i.

Finally this support can be provided With a conduit 15 arranged abovethe ignited fuel and perforated with one or more rows of air inletorifices. The operation is the same as that above described, except thatthe cup 1 is moved backward by hand in the slide- Ways 14 by means ofthe handle 16, so as to release it from the support at the time of theignition or after extinction for permitting its cleaning.

The above described arrangements are, of

for leading in the lower part, of the latter the atmospheric; airnecessary for the lgnition of the fuel and for imparting, at thesametime, to this air an accelerated speed,- a nozzle-of decreasing -crosssection, arranged above the said cup and adapted to "take theatmospheric air and to lead it in a reheated condition and at anaccelerated speed above the ignited 'fuel,-a nozzle of decreasing crosssection arranged at the rear part of the cup and adapted to takeadditional atmospheric air and to lead it above the ignited fuel forcompleting the combustion. V r

2'. A burner for liquid or liquefiable fuels, comprising a cup forming acombustion 'chamber,a tube carried by the said cup for leading in thelatter the liquid fuel,a flared opening on the frontface of the cup forleading in the lower part of the latter the atmospheric airnecessary forthe ignition of the fuel and for imparting, at the same time, to thisair an accelerated speed,a nozzle of decreasing cross section, arrangedabove the said cup and adapted to take the atmospheric air and to leadit in a reheated condition and at an accelerated speed above the ignitedfuel,a nozzle of decreasing cross sectiona'rranged at the rear part ofthe cup and adapted to take additional atmospheric air and to lead itabove the ignited fuel for completing the combustion,and means formoving the cup and the tube iticarries for facilitating the ignition andthe cleaning of the burner.

The foregoing specification of my burner utilizing mazout or otherliquid or liquefiable fuel, Without'pressure, capable of being fitted onany industrial and domestic heating apparatuses, signed by me this 19thday of January, 1922. I v.

ANDRE MARIE risen RENE PIEDALLU.

